An elevation is different. It shows the face of something, or perhaps more correct, the projection of an object/s to a plane. But my testing suggests it produces SECTIONS, not elevations.
Yes, you can use abbreviations in tables and figures. All abbreviations used in tables and figures should be defined in the table note or figure caption, respectively, even though the abbreviations will be also be defined in the text if they are used there.
S.F. stands for significant figures. they are used to simplify large complicated numbers.tis is done as it does not make any significant difference while doing the calculation.as if you do calculation with .00234*some number .then if we neglect last value the accuracy will will reduce to 4 digit. means we get correct answer for four decimal place ...